CN105514452B - Membrane electrode assembly and fuel cell unit - Google Patents
Membrane electrode assembly and fuel cell unit Download PDFInfo
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- CN105514452B CN105514452B CN201510651333.5A CN201510651333A CN105514452B CN 105514452 B CN105514452 B CN 105514452B CN 201510651333 A CN201510651333 A CN 201510651333A CN 105514452 B CN105514452 B CN 105514452B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/96—Carbon-based electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04291—Arrangements for managing water in solid electrolyte fuel cell systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1058—Polymeric electrolyte materials characterised by a porous support having no ion-conducting properties
- H01M8/1062—Polymeric electrolyte materials characterised by a porous support having no ion-conducting properties characterised by the physical properties of the porous support, e.g. its porosity or thickness
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1067—Polymeric electrolyte materials characterised by their physical properties, e.g. porosity, ionic conductivity or thickness
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The present invention relates to membrane electrode assembly and fuel cell.Membrane electrode assembly in fuel cell unit includes：Dielectric film；Form the anode catalyst layer on the first surface of dielectric film；Form the cathode catalyst layer on the second surface of dielectric film；The anode gas diffusion layer being stacked on anode catalyst layer；With the cathode gas diffusion layer being stacked on cathode catalyst layer.Anode catalyst layer, cathode catalyst layer, anode gas diffusion layer and cathode gas diffusion layer have per unit thickness identical heat-insulating property.Membrane electrode assembly meets T1+T3<T2+T4、T1<T2 and T3>All relations in T4, the wherein thickness of anode catalyst layer in the stacking direction is defined as T1, the thickness of cathode catalyst layer in the stacking direction is defined as T2, the thickness of anode gas diffusion layer in the stacking direction is defined as T3, and the thickness of cathode gas diffusion layer in the stacking direction is defined as T4.
Description
Technical field
The present invention relates to a kind of membrane electrode assembly being used in fuel cell unit, and further relate to a kind of fuel cell unit.
Background technology
Japanese Patent Application No.2012-243630, which is described, meets relation T1+T3 >=T2+T4, T1<T2、T3>T4
A kind of membrane electrode assembly and a kind of fuel cell unit, the wherein thickness of anode catalyst layer in the stacking direction be defined as
T1, the thickness of cathode catalyst layer in the stacking direction are defined as T2, the thickness of anode gas diffusion layer in the stacking direction
It is defined as T3, and the thickness of cathode gas diffusion layer in the stacking direction is defined as T4.
The content of the invention
However, it has been found that it is difficult to be strengthened in negative electrode according to T1+T3 and T2+T4 size relationship in some cases
Thermal insulation on side.Under high temperature low humidified state, anode is likely to become drying, and it is therefore desirable for is conveyed towards anode by negative electrode
Caused generation water.Unfortunately, it has been found that in traditional construction, it is difficult to accelerate transfer of the water from negative electrode to anode.
The present invention provide can strengthen to a greater degree with thermal insulation on the anode side compared with the cathode side thermal insulation simultaneously
And accelerate a kind of membrane electrode assembly of transfer of the water from negative electrode to anode and a kind of fuel cell unit.
The membrane electrode assembly being used in fuel cell unit according to an aspect of the present invention includes：Dielectric film；Anode
Catalyst layer, the anode catalyst layer are formed on the first surface of dielectric film；Cathode catalyst layer, the cathod catalyst
Layer is formed on the second surface of dielectric film；Anode gas diffusion layer, the anode gas diffusion layer are stacked on anode and urged
On agent layer；And cathode gas diffusion layer, the cathode gas diffusion layer are stacked on cathode catalyst layer.Anode catalyst
Layer, cathode catalyst layer, anode gas diffusion layer and cathode gas diffusion layer have per unit thickness identical heat-insulating property.Film
Electrode assemblie meets relation T1+T3<T2+T4、T1<T2 and T3>All relations in T4, wherein, anode catalyst layer is stacking
Thickness on direction is defined as T1, and the thickness of cathode catalyst layer in the stacking direction is defined as T2, anodic gas diffusion
The thickness of layer in the stacking direction is defined as T3, and the thickness of cathode gas diffusion layer in the stacking direction is defined as
T4.According to this aspect, can strengthen to a greater degree with thermal insulation on the anode side compared with the cathode side adiabatic and
Accelerate transfer of the water from negative electrode to anode.
In the above, anode catalyst layer, cathode catalyst layer, anode gas diffusion layer and cathode gas diffusion layer can
With including carbon.Determine that adiabatic principal element is carbon.Cathode catalyst layer and anode catalyst layer both of which include carrying this
The carbon of the catalyst of a little layers, and anode gas diffusion layer and cathode gas diffusion layer also include carbon, thus with the anode side
Thermal insulation compare and strengthen thermal insulation on the cathode side to a greater degree.Correspondingly, it can speed up transfer of the water from negative electrode to anode.
The present invention can be implemented with various aspects.For example, in addition in the form of membrane electrode assembly, the present invention can also
Implemented in the form of fuel cell unit including membrane electrode assembly etc..
Brief description of the drawings
Feature, advantage and the technology of the exemplary embodiment that the present invention is described below with reference to accompanying drawing and industry are anticipated
Justice, wherein similar numeral represents similar element, and wherein：
Fig. 1 is the general perspective of the construction for the fuel cell unit for being shown as embodiments of the invention；
Fig. 2 is roughly to show the section view near the oxidant gas discharge holes of cell；
Fig. 3 is the explanatory diagram for the construction for showing MEGA 110；
Fig. 4 is the explanatory diagram of the thickness of the catalyst layer and gas diffusion layers that comprehensively show each sample；And
Fig. 5 is the explanation for showing the relation between the transfer amount of (T2+T4)/(T1+T3) value and water from negative electrode to anode
Property view.
Embodiment
Fig. 1 is the general perspective of the construction for the fuel cell unit 10 for being shown as embodiments of the invention.Fuel cell
Group 10 has stacked structure, and the stacked structure is included in the work stacked in Z-direction (being hereinafter also called " stacking direction ")
For the cell 100 of fuel cell, and the stacked structure keeps these batteries between a pair of end plate 170F, 170E.Combustion
Material battery pack 10 is included in the terminal board at front position between the end plate 170F at front position and cell 100
160F, wherein the insulation board 165F at front position is disposed between end plate 170F and terminal board 160F.Fuel cell unit
10 are additionally included in the terminal board 160E at back-end location between the end plate 170E at back-end location and cell 100, its
In insulation board 165E at back-end location be between end plate 170E and terminal board 160E.Cell 100, terminal board
It is each with the plate with substantially rectangular contour shape in 160F, 160E, insulation board 165F, 165E and end plate 170F, 170E
Structure, and it is arranged such that each of which long side extends in X-direction (horizontal direction), and each of which short side is in Y
Extend on direction (vertical direction, vertical direction).
Each fuel gas that includes in end plate 170F, insulation board 165F and terminal board 160F at front position supplies
Hole 172in and fuel gas discharge holes 172out, multiple oxidant gas supply orifice 174in and multiple oxidant gas is answered to discharge
Hole 174out and multiple cooling agent supply orifice 176in and multiple cooling agent tap 176out.These supply orifices and tap
The corresponding hole (not shown) that each corresponding opening position in each cell 100 is formed is coupled to, is consequently formed
Gas supply manifold corresponding to each and each corresponding gas discharge manifold, and it is each corresponding to cooling agent supply manifold and
Cooling agent discharge manifold corresponding to each.Meanwhile the end plate 170E at back-end location, insulation board 165E and terminal board respectively
Any supply orifice and any tap are not formed in 160E.Because fuel cell unit 10 is following types of fuel cell
Group, i.e. reactant gas (fuel gas, oxidant gas) and cooling agent are passed through into confession from the end plate 170F at front position
Answer manifold to be fed to each cell 100, and waste gas and waste water are passed through into discharge from the end plate 170F at front position
Manifold is discharged to the outside from each cell 100.However, fuel cell unit 10 is not limited to this type, and can use
All kinds cause for example from the end plate 170F supply reactant gases and cooling agent at front position, and by waste gas and give up
Water is discharged to the outside from the end plate 170E at back-end location.
Multiple oxidant gas supply orifice 174in are arranged in the end plate at front position in X-direction (long side direction)
The outer edge of 170F lower end, and multiple oxidant gas discharge holes 174out are arranged in end plate 170F's in the X direction
The outer edge of upper end.Fuel gas supply orifice 172in is arranged in the end plate at front position in the Y direction on (short side direction)
At the outer peripheral uppermost position in fig-ure of 170F right-hand member, and fuel gas discharge holes 172out is arranged in end plate in the Y direction
Put place in the outer peripheral lowermost position of 170F left end.Multiple cooling agent supply orifice 176in are below fuel gas supply orifice 172in
Arrange along the Y direction, and multiple cooling agent tap 176out cloth along the Y direction above fuel gas discharge holes 172out
Put.
Terminal board 160F at the front position and terminal board 160E at back-end location is produced for cell 100
The current-collector of raw output, and from terminal (not shown) to the collected electric power of outside output.
Fig. 2 is roughly to show the section view near the oxidant gas discharge holes 174out of cell 100.Often
Individual cell 100 (is hereinafter also called " MEGA 110 " or " membrane electrode assembly including membrane electrode spacer assembly 110
Part "), seal member 140, cathode separator 130, anode separator 120, gas channel member 150 and sealing plate 151.Only
Except with the direction turned upside down, having near oxidant gas supply orifice 174in and oxidant gas discharge holes
174out construction identical construction, and therefore by the description thereof will be omitted.
Seal member 140 is from its outer edge thereof MEGA 110 part, and is formed by resin.Seal member
140 combine cathode separator 130 and anode separator 120 so as to seal oxidant gas, fuel gas and the leakage of cooling agent.
Sealing plate 151 is disposed on the cathode side of seal member 140.Sealing plate 151 is metallic plate, and one of sealing plate 151
Divide and protrude into oxidant gas discharge holes 174out.Gas channel member 150 is disposed in MEGA 110, seal member 140
On the cathode side of sealing plate 151.Gas channel member 150 is the stream of the flowing for oxidant gas, and for example by
Porous metals are formed.It is noted that substituting, gas channel member 150 can be by the more of another type using porous metals
Mesoporous metal material is formed.Gas channel member 150 protrudes into identical with sealing plate 151 in oxidant gas discharge holes 174out
Position.In fig. 2, the corresponding convex of cathode separator 130, gas channel member 150 and sealing plate 151 is schematically illustrated
Go out size.
Cathode separator 130 is arranged to adjacent with the gas channel member 150 on next side of cell 100.It is cloudy
Pole separator 130 is metallic plate, and a part for cathode separator 130 is protruded into oxidant gas discharge holes 174out.
Anode separator 120 is arranged to MEGA 110 and the surface relative with gas channel member 150 of seal member 140.Anode point
It is that there is recess and raised metallic plate from device 120.Anode separator 120 does not protrude into oxidant gas discharge holes 174out
In.Fuel gas channel 128 is formed between anode separator 120 and MEGA 110, and coolant flow path 129 is formed in sun
Pole separator 120 and between the cathode separator 130 of next cell 100 of the anode separator 120.
Fig. 3 is the explanatory diagram for the construction for showing MEGA 110.MEGA 110 includes dielectric film 111, cathode catalysis
Oxidant layer 114, anode catalyst layer 116, cathode gas diffusion layer 118 and anode gas diffusion layer 119.Dielectric film 111 is tool
There is the dielectric film of proton conductive, and fluorine electrolyte resin (ion exchange resin) such as perfluorinated sulfonic acid polymer is used for
Dielectric film 111.
Cathode catalyst layer 114 and anode catalyst layer 116 include the carbon for carrying catalyst (such as platinum).In the present embodiment
In, apply anode catalyst layer 116 with crossing the whole first surface of dielectric film 111, but only in dielectric film 111
Apply cathode catalyst layer 114 on the regional area (power generation region) of second surface.Because with cathode catalyst layer 114
Compare, the anode catalyst layer 116 of unit area needs less catalyst amounts (typically 1/2 or less, such as greatly
Cause 1/3), even and if therefore cross the first surface of dielectric film 111 whole region apply catalyst still will not be excessive
Ground wastes, and this applying mode is actually easy to application process.
Cathode gas diffusion layer 118 is disposed on cathode catalyst layer 114, and anode gas diffusion layer 119 is by cloth
Put on anode catalyst layer 116.Cathode gas diffusion layer 118 and the both of which of anode gas diffusion layer 119 are formed by carbon paper.
It is noted that with substituting carbon paper, these layers can be formed by carbon non-woven fabric.
In the present embodiment, in each MEGA 110, three formula all meet below, wherein anode catalyst layer
116 thickness in the stacking direction is defined as T1, and the thickness of cathode catalyst layer 114 in the stacking direction is defined as T2,
The thickness of anode gas diffusion layer 119 in the stacking direction is defined as T3, and cathode gas diffusion layer 118 is in stacking direction
On thickness be defined as T4.
T1+T3<T2+T4…(1)
T1<T2…(2)
T3>T4…(3)
In this case, if formula (1) and formula (3) are satisfied, formula (2) must be satisfied.
Specifically, if formula (1) is satisfied, i.e. if being satisfied the thickness and negative electrode of cathode catalyst layer 114
The thickness sums (T2+T4) of gas diffusion layers 118 is more than the thickness and anode gas diffusion layer 119 of anode catalyst layer 116
Thickness sum (T1+T3), then can with anode-side thermal insulation (anode catalyst layer 116 and anode gas diffusion layer 119 it is exhausted
Heat) compared to strengthen to a greater degree on cathode side thermal insulation (cathode catalyst layer 114 and cathode gas diffusion layer 118 it is exhausted
Heat).Determine that adiabatic principal element is carbon.Cathode catalyst layer 114 and the both of which of anode catalyst layer 116 are urged including carrying
The carbon of agent.Cathode gas diffusion layer 118 and anode gas diffusion layer 119 are formed by carbon paper, and are therefore made comprising carbon fiber
For its stock.If cathode gas diffusion layer 118 and anode gas diffusion layer 119 have repellency, these layers include
Carbon particle is as the material for forming hydrophobic layer.In this manner, cathode catalyst layer 114, anode catalyst layer 116, cathode gas
Diffusion layer 118 and anode gas diffusion layer 119 include the carbon as the factor for determining thermal insulation, and either catalyst layer or
Gas diffusion layers, the heat-insulating property relative to thickness are essentially identical.This means each catalyst layer and each gas expand
Scattered layer has the of substantially equal heat-insulating property of per unit thickness.Correspondingly, can be according to the total of catalyst layer and gas diffusion layers
Thickness Evaluation degree of insulation.
In the present embodiment, in each MEGA 110, the thickness T2 of cathode catalyst layer 114 in the stacking direction is by shape
As the thickness T1 more than anode catalyst layer 116 in the stacking direction., can be with anode catalyst layer using this construction
Thermal insulation is compared to the thermal insulation for strengthening cathode catalyst layer 114 to a greater degree.By meeting formula (1), can with anode-side
Thermal insulation is compared strengthens the thermal insulation on cathode side to shift water towards anode-side to a greater degree；And by meeting formula (2),
Generation water can spread more efficiently towards anode catalyst layer 116 caused by cathode catalyst layer 114.If cathode side
On thermal insulation be more than anode-side on thermal insulation, then cathode temperature become to be above temperature of anode.As a result, the local water on cathode side steams
Steam pressure becomes to be above the local water vapor pressure in anode-side.This difference of local water vapor pressure accelerate water from negative electrode to
The transfer of anode.
In the present embodiment, the thickness T3 of anode gas diffusion layer 119 in the stacking direction is formed to compare cathode gas
The thickness T4 of diffusion layer 118 is thick.By meeting formula (3), the gas diffusion in cathode gas diffusion layer 118 can be more than anode
Gas diffusion in gas diffusion layers 119, thus strengthen the drainage of cathode gas diffusion layer 118.
Fig. 4 is comprehensively to show that the catalyst layer of each sample and the explanatory of corresponding thickness of gas diffusion layers regard
Figure.Each thickness represents the value in the state of each cell 100 is secured in fuel cell unit 10.In Fig. 4, replace
In generation, has used (T2+T4)/(T1+T3) using formula (1).(if T2+T4)/(T1+T3) value is more than 1, formula (1)
It is satisfied.
In sample 1, the thickness T1 of anode catalyst layer is 3.5 μm, and the thickness T2 of cathode catalyst layer is 10.5 μm, sun
The thickness T3 of pole gas diffusion layers is 159 μm, and the thickness T4 of cathode gas diffusion layer is 156 μm.Sample 1 meets all
Formula (1) arrives (3).
In sample 2, the thickness T1 of anode catalyst layer is 3.5 μm, and the thickness T2 of cathode catalyst layer is 20 μm, anode
The thickness T3 of gas diffusion layers is 159 μm, and the thickness T4 of cathode gas diffusion layer is 156 μm.Sample 2 meets all public affairs
Formula (1) arrives (3).
In sample 3, the thickness T1 of anode catalyst layer is 10.5 μm, and the thickness T2 of cathode catalyst layer is 10.5 μm,
The thickness T3 of anode gas diffusion layer is 159 μm, and the thickness T4 of cathode gas diffusion layer is 159 μm.Sample 3 has relation
T1=T2, T3=T4, T1+T3=T2+T4, and formula (1) is unsatisfactory for any one in (3).
In sample 4, the thickness T1 of anode catalyst layer is 10.5 μm, and the thickness T2 of cathode catalyst layer is 20 μm, sun
The thickness T3 of pole gas diffusion layers is 159 μm, and the thickness T4 of cathode gas diffusion layer is 126 μm.Sample 4 meets formula
(2) and (3), but there is relation T1+T3>T2+T4；Therefore sample 4 and it is unsatisfactory for formula (1).
Fig. 5 is the explanation for showing the relation between the transfer amount of (T2+T4)/(T1+T3) value and water from negative electrode to anode
Property view.The transfer amount of water is measured in such a way.As step 1, oxygen and anodic gas are fed to cell 100
To produce electric power.Hereafter, cell stops producing electric power.Water is retained in the anode and negative electrode of cell 100.As step
Rapid 2, the anodic gas for anode is supplied to discharge the water retained in the anode.Now water retains in the cathode.As step
Rapid 3, measure the weight X1 of cell 100.As step 4, indwelling cell 100 as former state.As a result, retain in the cathode
Water be transferred to anode.As step 5, the anodic gas for anode is supplied to discharge the water in anode-side.Now discharge
Water be from negative electrode transfer water.As step 6, the weight X2 of measurement cell 100.As step 7, water is calculated from negative electrode
To the transfer amount of anode.By using formula：X1-X2 calculates the transfer amount of water.
Such as from Fig. 5 it is apparent that understanding as (T2+T4)/(T1+T3) value uprises, transfer of the water from negative electrode to anode
Quantitative change is high.In addition, have understood if (T2+T4)/(T1+T3) value goes above 1, i.e. if (T1+T3)<(T2+T4)
To meet, then slope of a curve is uprised, and therefore transfer amount of the water from negative electrode to anode is further speeded up.
According to the present embodiment, membrane electrode spacer assembly 110 meets T1+T3<T2+T4、T1<T2 and T3>It is all in T4
Relation, the wherein thickness of anode catalyst layer 116 in the stacking direction are defined as T1, and cathode catalyst layer 114 is in stacking side
Upward thickness is defined as T2, and anode gas diffusion layer 119 is defined as T3, and negative electrode gas in the upper thickness of stacking direction
The thickness of body diffused layer 118 in the stacking direction is defined as T4；Therefore, it is possible to compared with the thermal insulation in anode-side more
Thermal insulation on ground enhancing cathode side, therefore accelerate transfer amount of the water from negative electrode to anode.
In the present embodiment, determine that the principal element of thermal insulation is set to carbon, and exist as the carrier for carrying catalyst
Carbon is used in cathode catalyst layer 114 and anode catalyst layer 116, and the carbon paper comprising carbon fiber is used as cathode gas expansion
Dissipate the basic material of layer 118 and anode gas diffusion layer 119.However, the carrier for carrying catalyst can be the load not comprising carbon
Body.For example, with substituting carbon, other carriers, such as zeolite, aluminum oxide and ceramics can also be used.In this case, such as it is similar to
The situation for the carrier for carrying catalyst is uaed carbon as, the thickness of catalyst layer and the thickness sum of gas diffusion layers determine exhausted
Heat.
As it was previously stated, several instance interpretations embodiments of the invention are had been based on, and previously described embodiments of the present invention
The understanding present invention is promoted, but is not intended to limit the present invention.Obviously, can be in the feelings without departing from spirit and scope by the claims
Changed under condition and/or improve the present invention, and include its equivalent form of value in the present invention.
Claims (3)
1. a kind of membrane electrode assembly being used in fuel cell unit, the membrane electrode assembly are characterised by including：
Dielectric film (111)；
Anode catalyst layer (116), the anode catalyst layer (116) are formed on the first table of the dielectric film (111)
On face；
Cathode catalyst layer (114), the cathode catalyst layer (114) are formed on the second table of the dielectric film (111)
On face；
Anode gas diffusion layer (119), the anode gas diffusion layer (119) are stacked on the anode catalyst layer (116)
On；And
Cathode gas diffusion layer (118), the cathode gas diffusion layer (118) are stacked on the cathode catalyst layer (114)
On, wherein
The anode catalyst layer (116), the cathode catalyst layer (114), the anode gas diffusion layer (119) and described
Cathode gas diffusion layer (118) has per unit thickness identical heat-insulating property, and
The membrane electrode assembly meets T1+T3<T2+T4、T1<T2 and T3>All relations in T4, wherein, it is described anode-catalyzed
The thickness of oxidant layer (116) in the stacking direction is defined as T1, and the cathode catalyst layer (114) is on the stacking direction
Thickness is defined as T2, and thickness of the anode gas diffusion layer (119) on the stacking direction is defined as T3, and institute
State thickness of the cathode gas diffusion layer (118) on the stacking direction and be defined as T4.
2. membrane electrode assembly according to claim 1, wherein
The anode catalyst layer (116), the cathode catalyst layer (114), the anode gas diffusion layer (119) and institute
Stating cathode gas diffusion layer (118) includes carbon.
3. a kind of fuel cell unit, it is characterised in that including membrane electrode assembly according to claim 1 or 2 (110).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-208571 | 2014-10-10 | ||
| JP2014208571A JP6156317B2 (en) | 2014-10-10 | 2014-10-10 | Membrane electrode assembly and fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN105514452A CN105514452A (en) | 2016-04-20 |
| CN105514452B true CN105514452B (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510651333.5A Active CN105514452B (en) | 2014-10-10 | 2015-10-10 | Membrane electrode assembly and fuel cell unit |
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| Country | Link |
|---|---|
| US (1) | US9634346B2 (en) |
| JP (1) | JP6156317B2 (en) |
| KR (1) | KR101823207B1 (en) |
| CN (1) | CN105514452B (en) |
| DE (1) | DE102015117087B4 (en) |
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| JP7272319B2 (en) * | 2020-05-22 | 2023-05-12 | トヨタ自動車株式会社 | Laminates for fuel cells |
| CN112838251A (en) * | 2021-01-25 | 2021-05-25 | 武汉绿知行环保科技有限公司 | Fuel cell membrane electrode and preparation method thereof |
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| CN1278367A (en) * | 1997-10-28 | 2000-12-27 | 东芝株式会社 | Fuel cell with gas manifold |
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| US7429429B2 (en) | 2004-06-02 | 2008-09-30 | Utc Power Corporation | Fuel cell with thermal conductance of cathode greater than anode |
| JP5069927B2 (en) | 2007-03-26 | 2012-11-07 | アイシン精機株式会社 | Membrane electrode assembly for fuel cell and method for producing the same |
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| JP2012243630A (en) * | 2011-05-20 | 2012-12-10 | Toyota Motor Corp | Fuel cell |
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| CN105514452A (en) | 2016-04-20 |
| KR101823207B1 (en) | 2018-01-29 |
| DE102015117087A1 (en) | 2016-05-25 |
| US9634346B2 (en) | 2017-04-25 |
| JP6156317B2 (en) | 2017-07-05 |
| DE102015117087B4 (en) | 2023-06-29 |
| JP2016081581A (en) | 2016-05-16 |
| US20160104910A1 (en) | 2016-04-14 |
| KR20160042771A (en) | 2016-04-20 |
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